GS9001
EDH Coprocessor
GENLINX
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Japan Branch: A-302, Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3247-8838 fax. (03) 3247-8839
Document No. 521 - 38 - 02
DATA SHEET
Control
Logic
Compare
Errored
Field
Counter
Serial Clock
& Data
Device Address
Ancillary
Check
Error Flags
&
Format
CRC
Extraction
Transmit/
Receive
Data In
Clock
Reset
CRC
Calculation
Automatic
Standards
Detection
Data
Out
Interrupt
Transmission
Error Flags
HSync, VBlank,
Ancillary Data, TRS-ID,
TRS Absence Indication
Field Signals/
Standard Indication
Mux
I
C
Interface
APPLICATIONS
4sc, 4:2:2 and 360 Mb/s serial digital interfaces
Source and destination equipment
Distribution equipment
Test equipment
The GS9001 implements error detection and handling (EDH)
functions according to SMPTE RP165. Interfacing to the
parallel port of either the GS9002/GS9022 serial digital
encoders or GS9000 decoder, the GS9001 provides EDH
insertion and extraction for 4sc NTSC, 4sc
PAL and 4:2:2
component standards up to 18 MHz luminance sampling.
The GS9001 also generates timing signals such as horizontal
sync, vertical blanking, field ID and ancillary data identification.
The ancillary data identification aids the extraction of ancillary
data from the data stream.
The device has an
I
2
C (Inter-Integrated Circuit) serial interface
bus for communication with a microcontroller. The device
can be programmed as an
I
2
C slave transmitter or receiver by
the microcontroller. This interface can be used to read the
complete set of error flags and override the flag status prior to
re-transmission. The device automatically determines the
operating standard which can be overridden through the
I
2
C
interface. Timing signals and transmission error flags are also
available on dedicated outputs.
FEATURES
DESCRIPTION
Error Detection and Handling (EDH) according to
SMPTE RP165
EDH insertion and extraction in one device
autostandard operation
I
2
C Serial communications interface for access to
error flags and device configuration
available stand alone mode
error flags available on dedicated outputs
field, vertical, horizontal timing signals, ancillary data
indication and TRS indication
video standard and invalid data indication
reserved words readable and writeable
21 bit Errored Fields counter
passthrough mode to bypass EDH packet insertion
true 8-bit compatibility
40 MHz operating frequency
Part Number
Package Temperature
GS9001-CQM
44 PQFP
O
°
C to 70
°
C
ORDERING INFORMATION
BLOCK DIAGRAM
Revision Date: February 1996
I
2
C
is a registered Trademark of Philips